KOJA 0603, Инструкция по эксплуатации и обслуживанию

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AIR HANDLING UNIT FUTURE
INSTRUCTIONS FOR OPERATION AND MAINTENANCE
Commissioning and maintenance
2017-02-13 V. 2.0 11
2.2. Maintenance
WARNING
Observe general and section-specific safety instructions.
WARNING
Preventing start-up before starting the maintenance work
CAUTION
Earthing of the access doors must be checked visually after closing the access doors.
In access doors without hinges the earthing conductor must be connected to a quick
disconnect connector after attaching the door (see picture Earthing of access doors ) .
Before starting any maintenance and/or repair work, make sure that the work will not cause unnecessary
disturbance to other activities in the building. Stop the unit and turn the service switch to the zero position.
Remove the fuses of both speeds of 2-speed motors (all fuses in case of 3-speed motors) and make sure (via a
written notice, for example) that the unit will not be started accidentally during the maintenance.
After completing the maintenance and/or repair work, start the unit and make sure that all shut-off and control
devices, instruments and the signal lamp are functioning.
The stated maintenance intervals are only guidelines. The intervals are determined by the utilisation rate of the
air-conditioning plant and the ambient conditions. The given intervals apply when the plant is used 8 hours a
day in city air environment. The maintenance intervals are longer in cleaner environments (like the countryside)
and shorter in dirtier environments (like industrial areas).
It is advisable to have the unit serviced at the beginning (autumn) and at the end (spring) of the heating season.
Maintenance activities that can be performed by the plant’s own service personnel are cleaning, the replace-
ment of filters, belts and pulleys, and the lubrication of joints and bearings.
Repairs on unit sections, replacement of bearings, and all installation and adjustment operations related to
electricity or automation require special expertise. Clean the unit with an ordinary detergent. Solvents must not
be used in cleaning sections that include aluminium parts (heat exchangers).
Spare parts mentioned in these instructions are available at Koja or the manufacturer in question. (Koja Ltd
reserves the right to changes without prior notice.)